Tt250 adjustable pilot fuel mixture screw

Tlume · 08-13-2020, 10:45 AM

Has anyone come across a adjustable pilot fuel mixture screw for the tt250? I have added a mark across mine so I can use a flat head to adjust it but I would be better if I could replace it with the ones that you can adjust by hand. I tried two from Amazon but they weren't the correct one.

Thanks!

TheChairman · 08-14-2020, 02:52 AM

The jet kit that CSC sells includes a replacement screw.

I found that I was able to get in there and do all of the adjusting I want with a bit out of a 6 in 1 screwdriver with no issues.

Deckard_Cain · 08-14-2020, 09:32 AM

I installed an extended and marked mixture screw on my Hawk. For the $11 it costs.... plus looks cool- that ought to add like 10hp right there.

But it does work.

Goob · 08-14-2020, 10:56 PM

Quote:

Originally Posted by Tlume

Has anyone come across a adjustable pilot fuel mixture screw for the tt250? I have added a mark across mine so I can use a flat head to adjust it but I would be better if I could replace it with the ones that you can adjust by hand. I tried two from Amazon but they weren't the correct one.

Thanks!

Here is a link to an adjustable Pilot screw with a knob on it. Maybe this is what you tried?

I use it on my Orion RXB150 that has the Mikuni VM26 flange mount carb, that is basically the same as the stock TT250 carb. Should fit. I reused the existing o-ring, washer, or spring and just replaced the slotted screw with this knobbed one.

Here are a couple of sites (the e-bay one is the one I got, there are a bunch to choose from).

https://tboltusa.com/store/tusk-fuel...k-p-10604.html

https://www.orionpowersports.com/alu...rew-extension/

https://www.ebay.com/itm/4-stroke-Mo...p2047675.l2557

Tlume · 08-16-2020, 10:22 AM

Thanks guys for the advice. Deckard, can you send a link to the one you put in your hawk? I tried one from Amazon that looked very similar to the three listed by goob but the thread pitch was much finer than the screw in the TT carb. I feel if it fit in a hawk it should have more chance fitting in the TT.

08-13-2020, 10:45 AM	#1
Tlume Join Date: Jul 2020 Location: SLC, Utah Posts: 6	Tt250 adjustable pilot fuel mixture screw Has anyone come across a adjustable pilot fuel mixture screw for the tt250? I have added a mark across mine so I can use a flat head to adjust it but I would be better if I could replace it with the ones that you can adjust by hand. I tried two from Amazon but they weren't the correct one. Thanks!
	0

08-14-2020, 02:52 AM	#2
TheChairman Join Date: May 2020 Location: Philadelphia Posts: 115	The jet kit that CSC sells includes a replacement screw. I found that I was able to get in there and do all of the adjusting I want with a bit out of a 6 in 1 screwdriver with no issues.
	0

08-14-2020, 09:32 AM	#3
Deckard_Cain Join Date: Aug 2019 Location: Bay City, MI Posts: 397	I installed an extended and marked mixture screw on my Hawk. For the $11 it costs.... plus looks cool- that ought to add like 10hp right there. But it does work.
	0

08-16-2020, 10:22 AM	#5
Tlume Join Date: Jul 2020 Location: SLC, Utah Posts: 6	Thanks guys for the advice. Deckard, can you send a link to the one you put in your hawk? I tried one from Amazon that looked very similar to the three listed by goob but the thread pitch was much finer than the screw in the TT carb. I feel if it fit in a hawk it should have more chance fitting in the TT.
	0